Diamond Sutra: Chapter 21

“Subhuti, do not maintain that the Buddha has this thought: ‘I have spoken spiritual truths.’ Do not think that way. Why? If someone says the Buddha has spoken spiritual truths, he slanders the Buddha due to his inability to understand what the Buddha teaches. Subhuti, as to speaking truth, no truth can be spoken. Therefore it is called ‘speaking truth’.”

At that time Subhuti, the wise elder, addressed the Buddha, “Most Honored One, will there be living beings in the future who believe in this Sutra when they hear it?”

The Buddha said:

“The living beings to whom you refer are neither living beings nor not living beings. Why? Subhuti, all the different kinds of living beings the Buddha speaks of are not living beings. But they are referred to as living beings.”